Section 3 Flashcards

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1
Q

What is growth?

A

an increase in size of a microbial population (reproduction)

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2
Q

What is the first step of binary fission?

A

the parent cell replicates DNA

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3
Q

What is the second step of binary fission?

A

the cell elongates and separates replicated DNA molecules

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4
Q

What is the third step of binary fission?

A

the cross wall grows inward

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5
Q

What is the forth step of binary fission?

A

the cross wall forms completely around separated DNA

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6
Q

What is the fifth step of binary fission?

A

the daughter cells separate

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7
Q

What is binary fission?

A

when the plasma membrane and cell wall start forming an equatorial septum that splits the cell in 2 daughter cells

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8
Q

What is budding?

A

when the daughter cell buds off a larger mother cell

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9
Q

What is doubling/generation time?

A

the time it takes for a population of bacteria to double in size

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10
Q

What does culturing/cultivating do?

A

it promotes the growth of bacteria in the lab

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11
Q

What is a media?

A

bacteriological foods/mixtures of nutrients contained in liquid or solid form

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12
Q

What are cultures?

A

when microorganisms enter a liquid medium or a surface of a solid medium and reproduce

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13
Q

What is a liquid media?

A

a broth

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14
Q

What is a solid media?

A

agar plates

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15
Q

What is culturable bacteria?

A

bacteria that can be cultured in a lab

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16
Q

What does culture-independent mean?

A

doesn’t require bacteria to reproduce in a lab or exist in large numbers

17
Q

What is metagenomics?

A

the study of all genetic material in an environment

18
Q

What is a colony?

A

a collection of genetically identical cells that arise from a single cell

19
Q

What are Colony Forming Units (CFU’s)?

A

single cells that rise to a colony

20
Q

What are pure cultures?

A

a single strain of bacteria